A week in tech

A round-up of all the latest tech news.

MobileWirelessò KDDI Corp. announced plans to introduce 3D maps in its EZnaviWalk road guide for pedestrians using the carrier's au mobile phone service. The service will provide 3D maps that reproduce the actual buildings at intersections, enabling users to more easily determine what direction they need to go in. The product is seen as a response to feedback that users had a difficult time orienting themselves with the 2D maps. The 3D maps, based on data...